Printer s overlay and underlay board and process of making same



u TED STATES PATENT oFFIoE.

STEPHEN J. DICKHAUT, OF SAUGERTIES, NEW YORK, ASSIGNOR TO THE MARTINCANTIN E COMPANY, OF SAUGERTIES, NEW YORK, A CORPORATION OF NEW YORK. V

rnmrnns OVERL Y AND UNDERLAY BOARD AND-PROCESS or MAK NesAiv E.

No Drawing.

To all wkom'z't-may'concem:

Be, it known th'at'I, STEPHEN HAUT, a citizen of the- United States, anda resident of Saugerties, I in the county of Ulster and State of NewYork, have invented acertain new and useful Improvement in PrintersOverlay and Underlay Boards and Processes of Making Same, of which thefollowing is a'specification.

My improvement relates to printers overlay "and underlay boards and toprocesses of making them and the base for'such boards, and processesofbuilding up such 'base into suitable printing thickness. .It'has for itsobject to improve and simplify such processes and torenderthem moreaccurate and reliable and to produce'an improved over- I la and'underlayboard and one more dura is in subsequent printing operations andmoresoft and flexible than heretofore possible; It consistsof thenovelprocesses and products herein described andclaime'd;

My invention is addressed generally to printers overlay and underlayboardsisuch as are described in U. S. Letters-Patent No.

892,166'of June 30th, 1908, to Lankes" &

Schwarzler. In making a base-such as is" described in said patent,difficulty has been encountered in producing a base'that W111 be=stained or tinted only on itsexterior surfaces and not inside, whichlatter would render the base useless'fo'r its purpose. Difficulty hasalso been encountered in making not only-the base but also the finishedboard soft and-flexible so that it will not easily crack in use: Myinvention is addressed'to' removing these objections and also to makingthe' finished board strong and" durable and'capable of withstandingstresses, blows and pressure to which it is subjected 111- a press insubsequent printing operations.

I have discovered that suitable paper stock maybe dipped into a stainingor tint ing solution and the latter solution stain or tint only the thinexteriorsurfaces of thepaper 'withoutpenetrating its substance, if. thesolution is made sticky-or non-penetrat in by the inclusion of a properstickyor adhesive material and that 'the'base may be made soft andflexible by introducinginto the tinting solution a softening agent. Anysuitable coloring material maybe employed and any suitable stickyand'softeningagent s ecifieauon bf Letters Patent.

J. DICK'.

and a half vgi Patented Dec. 9,1919.

Application filed March 15, 1918. Serial No."222,678.

may be employed. I find the following formula gives good results,namely, staining solution containing in ten gallons of'water one-fourthof an ounce of scarlet anilin, one

ounce of gluapreferably hide glue, and one tions may, of course, bevaried to suit vary ing constituents and conditions. I take any outbetween rollers. -The hide glue prevents the stainlng solution 1 frompenetrating the" interior of the white rag stock paper so that after thebase has been built up with' etchable material, printed' upon andetched,- the pinkstain will forma guide to the etcher to enable him todetermine when to stop thes of'glycerin. The proporetching operation.When the etcher notices the pink color appearing," he'will 'etchstill'farther butcarefully and will stop? when the pink color has beeneliminated. This will" bring the deeper etched parts of the board I downto the original base and will enable a I In the'operation of buildlngup" a sheet I of paper from th'e'ba'se of sufficient thick ness toreceive the imprint of thedesignfor the board, I applyto the base one ormore coatings of a buildin iup: solution contain ing etchabl'e buildingmaterial includinga' tough resistance substance 1 adapted to render theboard more durable and resistantito the blows and' pressure incident'tethe print ing operations in a press. The substanceI have preferredtofemploy for this purpose is casein, althoughother 'sim'ilar substancesmay be employed for the'purpose; It isof a tough resistant nature andact's' somewhat aS a cushioning means to the-.printingsurfaces: of theoverlay or underlay-board.

I also preferably employ in the" solution for the coating asofteningagent which is adapted to render theboard soft and flexible inuse, tending to prevent cracking, etc. I prefer to use for this purposeglycerin, although other substances" of'ga similar nature may beemployed.

I also f preferably .-use in the coating solution chalk and"otheri'etchable, hardening,

polishing and binding materials.

Any suitable formula may be employedif for the coating solution to buildup .the base;

to the desired thickness. I have found the following formula to giveexcellent results,

namely, "in 15 gallons of water, 41 lbs. calcium carbonate, 15 lbs.blanc fixe, 43 lbs. of clay, 26 lbs. satin white, -5 lbs. casein, oz.{

boro-phosphate, 1 oz. liquid ammonia, 1 pint glycerin and 101} lbs. ofglue, preferably hide glue. In the above formula the clay,

- serves to give body, the satin white to make the surface of the .papersmooth and hard and firm, the blanc fixe to make, the paper. heavy andso that it will take ink better,. hide glue as a binder,.glycerin as asoftening 1 agent serving to make the board soft and flexible and caseinas the tough resistant cushioning element.

It. will be understood above ingredients may be omitted altogether ormay be replaced by equivalent substances and that the proportions may bevaried within reasonable limits to suit varying con- I ditions.

my improved method a simple means for, making overlay .and underlay Yboards is provided which enables the etcher to know. exactly whento stopthe etching' operation and have a uniform and proper thickness to theboard and thezrelief, and' aboard isproduced which is soft and pliableand not lia- "s5 ble to crack in use and which is resistantto theshocksof a printing press in actual operationand is very durable.

What I claimas new and desire to secure .by LettersPatent is: ,o

1.; The process of making printers overlay er underlay boards whichconsists in dipping the paper base into a staining solutionadapted tostain only the surfaceof the base without penetrating its body and makea good printing surface, including aing etchable building 7. make .:agood printing. surface including adapted tomake the base soft andflexible, applying to the base thus tinted one'or more coatings of abuilding up solution containing etchable building material adapted totough resistant substance adapted to make the boardmore durable in usein the printing press and including a softening-agent to render theboardsoft and flexible, print-' v.ing uponthe board and dipping the board inthe etching solution until the exterior tin of the base is seen anddisappears. I I 2. The process of making prlnters overlay or, vunderlayboards which consists in dipping the paper base into a staining solur 60tion containing hide glue andglycerin, applying to: the base thus tintedone ormore coatings, of a building up solution containmaterial adaptedto casein and glycerin.

that some of the 3. .I-n the manufacture Jof a paper base upon 'whichftobuild one or'mor'ec'o'atings,

to form a paper of suflicien't thickness upon which to'print adesignfor' a printers overcapable of being subseq etched away" I lay orunderlay board, the useof a'staining" solution containing .a sticky oradhesive ingredient adapted to cause the solution to stain onlythe-surface of the base and prevent it' -from penetrating thebodyi ofthe 7 4;. In the manufacture of a paperbase upon which to'bulldoneormore ooatlngs,

capable of being subsequently 'etchedaway, Y

upon which to build one or more coatings, 5' capable of beingsubsequentlytetched away,

to form a paper of suflicient thickness upon Which to pr nt aodesign fora printers overlay or underlay board, which consists in making asoft'and flexible v paper base by adding to .the other constituentsofthe base i a softening agent adapted to keep the paper paper base into astaining solution containbase soft and flexible, and in dippingYthe inga sticky or adhesive; ingredient adapted to caus the solution to stainonlythe surface of thebase and prevent it from penetrating thelbody of.the. base. 1 V

6. Theprocess of making a paper base to form apaper of sufiicientthickuessupon WlllOll to print a design, fora printers over} upon whichto build one or more coatings, 7 capable of be ngsubsequentlyetchedaway,

layor underlayboard whichincludesthe ap l plicationto the base of asofteningagent] adapted tokeep thev paper base. soft and.

flexible.

7. The process of making, a paper base upon which to build one ormorecoatings,-

capable of being subsequently etched away, to form a paper of sufficientthickness upon which to print a design for a printers overlay orunderlay board, which includes the v application to the base ofglycerin. Y p

8. The process of making a paper base uponwhichto build one or morecoatings, capable of being subsequently etched away,

toform a paperofsuflicient thickness upon 1 which to print design for aprinters over-1 lay or underlay board, which consists-in dipping thepaper base into a staining-solution containing hide. glue and glycerin.p

9. Inthe manufacture. of printers overlay or underlay boards the,process of-building up-a sheet ofpaperv ofsuflicientthickness' toreceive the imprint, of the desigl'l. for such a board, which consistsin applying'to the paper base one or more coatings of a builda stanceadapted to make the overlay or under- I lay board more durable in use.

10. In the manufactureof printers overlay or underlay boards the processofbuilding up a sheet of paper of sufficient thi-clmess to receive theimprint of the design for such a board, which consists in applying tothe paper base One or more coatings of a building up solution containingetchable building material including casein.

11. In the manufacture of printers overlay or underlay boards theprocess of building up a sheet of paper of suflicient thickness toreceive the imprint ofthe design for such a board, which consists inapplying to the paperbase one or more coatings of a building up solutioncontaining chalk and other etchable materials and casein and glycerin.

I 12. As an article of manufacturea printers overlay or underlay boardhaving a design printed in relief thereon withthe relief portions of theboard back of the printed design made up in part of tough resistant orthe shocks and pressure of aprinting press.

13. As an article of manufacture a printers overlay or underlay boardhaving a design printed in relief thereon with the relief portions ofthe board back of the printed decushioning material adapted to withstandsign made up in part of chalkand other filling material, a cushioningmaterial and a-40 softening agent.

In testimony whereof, I have signed my name to this specification.

STEPHEN J. DICKHAUT.

